Bookmarker



Feb. 25, 1941.

BOOKMARKER F iled May 24, 1937 R. s. MANZARDO 2,233,367

Patented Feb. 25, 1941 PATENT OFFICE BOOKMARKER Roger S. Manzardo,Berne, Switzerland, assignor to Hans Felix Stoffel, Rorschach,Switzerland Application May 24, 1937, Serial No. 144,504

. In Germany May 30, 1936 1 Claim.

My invention relates to improvements in bookmarkers of the classcomprising an elastic band anchored to one corner of the cover and.extending diagonally across the latter; and. the objects of myimprovement are, first, to provide facilities for easily and quicklymounting the marker to any book cover; and, second, to afford means forreadily adjusting the said band to the proper tension in adaptation tothe changing thickness of one and the same stack of pages.

I attain these and related objects by the bookmarker illustrated, by wayof one example, in the accompanying drawing, in which- Fig. 1 is a planview of the marker fixedly attached to the upper right-hand and insidecorner of the reverse cover of a book; and

Fig. 2, a cross-section on the line II--II of Fig. 1.

I denotes a triangular piece of relatively thick and tough paper orcardboard diagonally folded in Z-shape. In this fold, denoted by 2, anendless rubber band 3 is passed. A small plate in the form of a shield 4is loosely clamped to the said band 3. The piece I is gummed on the 2rear side, and thus is easily pasted onto the inside of the finishedbook cover or to one of the pages.

When mounted as aforesaid, the rubber band 3 is passed diagonally overand across the cor- 30 responding corner of the stack of pages, and thisoperation is facilitated by the provision of the small shield 4. Theprimary function of the latter, however, is that of subjecting the band3 to the proper tension in adaptation to the changing thickness of thestack of pages which it holds down. By turning the shield 4 about theband 3, the latter is twisted and any slack is taken up so that thestack of pages is'always held down 5 by the correct amount of pressure.The fold 2 also may have the form of an inverted U through which therubber band 3 is passed.

By slipping the band 3 over the entire stack of pages of a book, thesaid band is subject to a 10 certain maximum tension which decreases asthe pages are turned over in any appreciable number. In order, then, toagain apply the necessary grip upon one corner of the stack of pages,the band 3 is again tensioned as required 15 by means of the shield 4,and this operation is done easily and quickly by the reader. When thelatter has finished reading, the band 3 indicates the page on which hesubsequently will have to continue with his reading. 20

What I claim and desire to secure by Letters Patent is:

A bookmarker of the character described comprising a triangular baseelement gummed on one side, a diagonally extending fold of Z-shape inthe said element, and the combination of an endless rubber band embeddedin the said fold with means secured thereto for the purpose ofincreasing the tension of the said band in adaptation to the decreasingnumber of pages to be held down.

ROBGER. S. MANZARDO.

